Financial Instruments (Details 5) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) Recognized in earnings on derivatives not designated as hedges	$ (181)	$ (11)	$ (1)	$ (42)
Interest rate contracts | Interest and other, net
Before-tax effect of derivative instruments and related hedged items in a fair value hedging relationship
Gain (Loss) Recognized in Earnings on Derivative	(22)	28	(46)	(71)
Gain (Loss) Recognized in Earnings on Related Hedged Item	22	(28)	46	70
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) Recognized in earnings on derivatives not designated as hedges		1		3
Foreign exchange contracts | Interest and other, net
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) Recognized in earnings on derivatives not designated as hedges	(183)	(15)	7	(55)
Other derivatives | Interest and other, net
Pre-tax effect of derivative instruments not designated as hedging instruments on the Consolidated Condensed Statements of Earnings
Gain (Loss) Recognized in earnings on derivatives not designated as hedges	2	3	(8)	10
Cash flow hedges
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	(309)	154	(239)	(160)
Gain (Loss) Reclassified from Accumulated OCI Into Earnings (Effective Portion)	(101)	24	(210)	(40)
Loss expected to be reclassified from Accumulated OCI into earnings in next 12 months			202
Cash flow hedges | Foreign exchange contracts | Net revenue
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	(311)	206	(136)	7
Gain (Loss) Reclassified from Accumulated OCI Into Earnings (Effective Portion)	(63)	46	(126)	(11)
Cash flow hedges | Foreign exchange contracts | Cost of products
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	9	(44)	(78)	(169)
Gain (Loss) Reclassified from Accumulated OCI Into Earnings (Effective Portion)	(21)	(27)	(44)	(30)
Cash flow hedges | Foreign exchange contracts | Other operating expenses
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	11	3	11	11
Gain (Loss) Reclassified from Accumulated OCI Into Earnings (Effective Portion)	(3)	4	(7)	5
Cash flow hedges | Foreign exchange contracts | Interest and other, net
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	(18)	(11)	(36)	(9)
Gain (Loss) Reclassified from Accumulated OCI Into Earnings (Effective Portion)	(14)	1	(33)	(4)
Net investment hedges | Foreign exchange contracts | Interest and other, net
Pre-tax effect of derivative instruments in cash flow and net investment hedging relationships
Gain (Loss) Recognized in OCI on Derivatives (Effective portion)	$ (67)	$ (2)	$ (1)	$ (17)